Portfolio Diversification - Does it Still Make Sense?

History shows investors that it pays to diversify
https://www.telegraph.co.uk/business/2025/09/25/history-shows-investors-that-it-pays-to-diversify/
For a smoother ride and better returns, don’t just grit your teeth and stick with it. 

Is the diversified portfolio dead? The AI boom has turned an age-old investing rule on its head.
https://www.marketwatch.com/story/is-the-diversified-portfolio-dead-the-ai-boom-has-turned-an-age-old-investing-rule-on-its-head-3e1405f7